In the past only Hannoveraner-stallions were auctioned. Since the Studbook works together with the Rheinishces Pferdestammbuch other studbook's sires can be presented as well. This is also the reason why the top-sale of today is from another studbook.
Two Danish studfarms battled it out for this stallion. Blue Hors and Andreas Helgstrad made it a scene never been witnessed before. Eventually Andreas Helgstrand went home with the (only) 2 and a half year old sire.
https://www.youtube.com/watch?v=zPyiveb83EM